And in two places I need to cross a conduit with a 35 millimetres cold feed pipe.
但管外还要包隔热层而且电线管在两处要与35毫米的冷水管交叉，地方恰好不够。
But they 've got to be wrapped in lagging, remember. and in two places I need to cross a conduit with a 35 millimetres cold feed pipe. There's just not enough space.
但管外还要包隔热层而且电线管在两处要与35毫米的冷水管交叉，地方恰好不够。
Hydraulic transients in piping systems are usually calculated by one-dimensional theory, in which real 3-d piping is replaced, by an equivalent straight conduit with the same cross section.
管道系统的水力过渡过程通常是采用一维理论进行计算的，因此实际的三维管道通常采用沿中心线延伸变成具有相同过流断面的等效直管来代替。
Hydraulic transients in piping systems are usually calculated by one-dimensional theory, in which real 3-d piping is replaced, by an equivalent straight conduit with the same cross section.
管道系统的水力过渡过程通常是采用一维理论进行计算的，因此实际的三维管道通常采用沿中心线延伸变成具有相同过流断面的等效直管来代替。
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